Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9725dc6f84b2f44cd1c594a241730b37b754a38ce2b10170135790b8e3d50171' 
  AND token = 'w2eTepCflYy0W/llMsvRx30wN9C1uLCW7og0xymgfzQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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