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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93f5caed34b4bde6b491925dff228d9330d2fdced7a8c567859c4db52ba27256' 
  AND token = 'o0E3u8Ea5vOhKua/XT+6wU2L3Nxa21m1uKvLGzBNzaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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