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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '642237eabf3bf70b7d8ad4e197403b75ebf0b14cb024ccb906a1117e5f6ce860' 
  AND token = 'SSO1F9E8vcVRfKFw4Lp9ohSJ6+tpGCQ5F48ynMnUHeA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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