Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '70162268217dd6a1d50dd2cefe5d8f015ecb7bcf364e215fc203329dab3a5d34' 
  AND token = '5Z7RCgnQBBPoCA1T2HU1Yo6D17jh+UGXfZdwcBBbBFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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