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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9c83bde0c21e1a00a1c613391a0d92d2af52e8fedc6fcd43273c06acd66490af' 
  AND token = 'Ktg4aJheDd468GLJlAM/dx7YK9C+vZGKTdc8QrunJEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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