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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0e4fb9c4d86d32a8131cfc405375433eae78b3576b31c5c698cecb2288f6926' 
  AND token = 'buH0KLtAti8Zu5yInVWSF60p601FBZYV8TH5zjzxVyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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