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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f25b45db5c93e807ba58f033fe93cbf544d618c0ec87c6e1d00cc89ed5130f5c' 
  AND token = 'rLyyAiD0xT5BIceCGinZWtnY4KRlFDuVOnB66lJOmVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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