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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fa02c7d122d4e9adcd37b3f7ffa572550188d6ac86f1b2761c0ef6fcca1a9f0a' 
  AND token = 'WPOPF8MHHi8kfVQLT5kICEIvlbIrfeaTH9VRp1o7K2w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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