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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'edd717e5f4f84ad1cb4c742ee380a7e20c5e523af67c0427005f4c326e0863f7' 
  AND token = 'x8ScHk2RN0m73s3+VoaMBcOZXK60x1zZzDx+mFxI4DY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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