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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ff79c2177373f0d9b371d0ccc879608249c19452600b086b0ca28cfa4f3f80b2' 
  AND token = '8XS85AcZ9IX2L8P7q2hqW5oLs1V2ocCndGFZEBSS/A0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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