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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '36e063d0e4ee24b314bd74567d1daa79b7fad165e4b4d1d0f33f4ed17c586d80' 
  AND token = 'NZXp11LkxjqODlbwswz+RHufZ/4NSY7ya4V5+96RTt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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