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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e06f67e3d439f959fb1189cd6fb47164be217314b5db00cd26222e426282e96a' 
  AND token = 'Zj05dy3mpAOaxH6bu8cnCe6+1Zu4vKaCO7NUeM+PUss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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