SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '606284f9d3d87b410c4897c929bb8a812a80e56b8f5ff6214f60d4f671232e98' 
  AND token = '70iF+oc8QVAk2YNLWDcgygVMPVCZG6MFR/mIciC3gVg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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