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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ce41d9b9c56214ec8a9dcf984fc5ed67df67e9550c7adf96a4326f6b71ada9e' 
  AND token = 'm3q6DyhQ3iNaJ+f2yg4GNd8XgeK4WqH86hSvzopP65I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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