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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35fc1ec054145785f31d3fddb896dad2d2b06f3fd889d7e082bd6b8a3d6f4d36' 
  AND token = 'e8MU9hcNhuypJj6DJ6eB0tbEK2E1w58l8b9Z7IxqxiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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