Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dea58dc5150c95d88ee715fb76904dc98d63b9bfc9ca8de24909a1c1857ba3dd' 
  AND token = 'z1zJAEp1a0Rd69QmrNTRPPhdtf2/pnNEYoIa6aR0+Ds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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