Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd449b1cd102b37c9bc9cb66c1b54e34f1904e6bb798b2f035a08c11280252346' 
  AND token = 'SoH3ixnvIPyYfhSJYNcb9yy4z2BwnpNI28QWg8qqiL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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