Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02567b701955ed38132c1477bce118f6d26d1d1b5bae4d92ec9bfe72f2d72229' 
  AND token = 'Gf9nchiagjYHUeQ4N3NLDXID9/ev3Ru5pOiwV2MW7dQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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