Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '851d73ff3dccd178709d238187a609dad4addc681e92ff1713773056a4e4f06a' 
  AND token = 'RRAR2t5Bc2l2jn716jjIvFNqPGqNyQMMJ/3ceNzegaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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