Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebfcacd71d6027458f043ee01860b7653f7f6658a3b7fd089483ff4032f0b733' 
  AND token = 'Di1P3lQggSqjZJHSZ0Xct33iSh8ederR/v//ejEEX+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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