Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eefd2f26c2536fd81c09f2a67688426e1da4e4c180274141e5b9e9e6a3793790' 
  AND token = 'eQi7meAug8zYEW8Ui8Mzac2P87kDqbdaXIVC+tup89w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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