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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47f137bdd94e8ee2fcd17863322cd9854078741524306dfa1ab6ea4fd34e69e5' 
  AND token = 'Ivp0rceOJ3LZyJ+3xIgFpbKl1E5bIfemDe5xcPrGF98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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