SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e54a9a6fee12a8e54cffd0e70cd2b9e13258c627e7acf0e759c4664756f3627a' 
  AND token = 'ShBX31hRAsW6EajI2wEyVt8BPYUvSqJ/lFaY/XDxlUs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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