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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '03d3ed1288264bd7f6a77f9ae7e2199efc428741bd0ac2b4bf2f08d9b56b093c' 
  AND token = 'yMhWpug819DMXhsddK51n6VP41shPb2IhY/jD/PD7hQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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