Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a06f577da8943d39cdec556c321406d3d5ed096dc93276ba14bfc045abc8b90a' 
  AND token = 'iwOY1tLR0epQMtJIx0y96NMESe4vMGKyT7oj+d7QykE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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