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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '070931856e05279c3044a05caaf7d436135c42a26e1622bb52a13e4c4c333864' 
  AND token = 'H3+CGK3zwfUYG83U7D9n361IEZKOAG0bGNH8nO5jZk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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