Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0757de3ad0a7456b95aa60aafe91b3406df1c8c11a6f86aa8d72518cfd5ddcd4' 
  AND token = 'bF2+MGJPz8t2x4LS9cm77IfB1H6abGQR1blQKmyNsPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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