Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c222fd20d61d16a451c0830cea7f473f0b7e32b4d62569bc6912f97610ce6278' 
  AND token = 'HXAEPUhSGEaeJON0i6AuR8K1lT6DN9Sgkmpg5Idx6ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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