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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8c243e1c3ea29dba3c638e96d4af1503cebd58ba8c5601bf6c74f564ef2caae6' 
  AND token = 'whLJopFgsZ/Dfoc3lec7OpAwU24J8cE/mAuOO6tWmoE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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