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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aaf3ddd3b61164adae8f76a7e5f0911a3d9e39adc70a1c20e10a24b02d942fea' 
  AND token = 'nuczf4g2jWGjJeMarcR0PjSoh17lZEEbpGr/FdEZiOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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