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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd8dba65bf5bfe4aada30bc9ac1927555996a9826d5609c7d23e80169139c19aa' 
  AND token = '8/v7da+N4ORu4rvjji6Qi9G8IRpd3bt3qsfrqyHuz8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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