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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7f3c956e0d168d17f3824290f2cfe297f7d98e86ae5850fd30ca7c3d8dddccdf' 
  AND token = '93wOX6PCr4CSLBeRDo91rX9b8ta0z6NPnJnGDnF70H0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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