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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95818a2094641a5a4d40c37d6d36312006397b3b3d9acf7162929fc22ccfb8b9' 
  AND token = 'rqAALS1svHTEQuWBZ8yX2DP27mDFl0Ow23wB8W5tTDs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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