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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2cfa024f453bbfde630c2793fa3ede025846c5dabef18049da9ea45d72e469e' 
  AND token = 'zKlEr1UJ2s6Y/8LDveLp0/GMezC7vEmtCkYCgXdan4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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