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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47fd50f839588e39e9a65ba67c243cbeb0f2fa15934b7e497eae38e9fd9a29bb' 
  AND token = 'a1TqV0qUpLYIxWcoPQKfwKNqJYGFXZdIX6c6TwhUk70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}