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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '087b4938aa12d221f3be4b467b946ed3f391bf352e18d0a76b241e2fe1a5ebbd' 
  AND token = 'fj9PIh7yZerD2pGBArcnZ+orQBeF8OoQjkJ2iLFjkEw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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