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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '658c16919db35f295870b6175860889588f638bf5e79fd69bd33a1f282ffc2aa' 
  AND token = 'bLW5qie/ojWX6IBLZM7EPDa9/kvQpLY1ECiO+echy5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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