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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'adab2dc1acf35c59983a45dad065be7f624cde5ba0597bc9ae4cf86784bf3a47' 
  AND token = 'rE/Ro2rrVllvAFSVmanrtOXF9or72wz+H/a4o/MIjUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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