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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95c7b368d863a61a953a1e7380081bbf0394e7896bc3c9f3f7d813eeaa720ae4' 
  AND token = 'HfpUOkO50QqOLNzD6Z98f/T4Do7UC2UMojxX00k9DE4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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