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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b372e23d1f52f88d5d8c22accec0fd116f42e82e5a9c7d97d3c60e71ce61713' 
  AND token = 'ACetHkuLD7aVjWsjWeDzJrdyPlrURPn2n+T+bQSHZRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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