SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e964cb2cb012e52ff7b2cb901773d643f99578a88c195b2b81d8dce2575aecb8' 
  AND token = 'P/X2Ig3shrRDqhvFLxJcIjTF2UvLnMBXwCZkamaVCII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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