Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62c2d3c5f61539c78e8d52a3da20216d89c5ef78637e87fcf0ddcda33a0b785c' 
  AND token = '1GjCvEGx+OU2qqy6E7EaPH5kf6BGKa18EUdmHCl8VkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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