Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '289bdb25596ca7dccf2666797d8dc14d6181c07d1ca2c9b63086ccf426771ed3' 
  AND token = 'ZksDXz6RAHLr6WeRpuVUVbUOoD0CLauDB4ejFjsDTGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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