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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22d5eadc0026527c9886457f4460aaa4aed7f145e36a3c3b104b8a68940771b8' 
  AND token = 'Kgp7H9Zf19CWlofY2pmdXOmNd9hVSF2b+tnhxk4j62Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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