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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ecaf7cdedd69d71a8c75e340aacb814778a5655d8b8dc6c2e5dd6d1e8876544b' 
  AND token = 'tdX+xGT+JRi6X9S49bWamshxhu15Cy1f8qphHypHJRc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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