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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '85bbb4e631fc373cf2e0e85b5712b6677192ab17052a8d0845103762417ab06b' 
  AND token = 'ihxW7leFZoTjcDaUrOihvL2yh+sRnseRqxOgqymJoF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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