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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22bf92193681a87ed2c8b82ad601442ba2ec2ede942adef8c3e0103d0c68c2d7' 
  AND token = 'PqvEiUACgeookTr43ckd/KO5Pdn8iV3cFDuV/Nn1rSc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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